Loom-shuttle motion



Nov. 20, 1928.

A. J. VERVAET LOOM SHUTTLE MOTION Filed June 4, 1927 3 Sheets-Sheet l WIN/E88 A. J. VERVAET LOOM SHUTTLE MOTION Nov 20, 1928.

s sheets-sheet Filed June 4, 1927 mmvron, flfi \wr SNer vqeT,

M I. ATTORNEY wlmrss Nov. 20, 1928.

A. J. VE RVAET LOOM SHUTTLE MOTION s Sheets-Sheet 5 Filed June 4, 1927 Eii-Dii m A TTORNEY f: ft HE; I?

V Patented Nov. 20,1928.

UNITED STATES PATENT, o

ARTHUR J. VERVAET, OF NORTH HALEDON, NEW JERSEY;

LOOM-SHUTTLE' MOTION;

Application filed June 4,

This invention relates to looms and particularly to the means for impelling the shuttles through the warp sheds. The principal object is to provide for the driving of the shuttle through the shed by force acting thereon, not by a blow or impact characterizing the shuttle driving in ordinary broadware looms,

but by force operating practically continuously throughout the flight of the shuttle, as in ordinary narrowware looms. But, instead of the shuttle actuators being. arranged only on each side of the weaving, space so as to be bridged by the shuttle (as suitably rotated pinions engaging rack-teeth on the shuttle, as

in such-narrow-ware looms), the shuttle actuators in accordance with my object are arranged and effective on the shuttle within the lateral bounds as well as laterally of the weaving space, whereby the width of the goods will not be limited by the necessity of providing 'a space sufficiently narrow for the shuttle to span. In short, my object is to provide for a continuously acting shuttle drive in the use of whichthereneed be no limitation to the width of the goods inpractice, such as there is in the ordinary narrowware shuttle drive.

In the accompanying drawings,

Fig. 1 is a. side elevation of a loom embodying the improved shuttle drive;

Fig. 2 is a front elevation of the upper part of the batten-including structure of a loom constructed to; embody my invention;

Fig. 3 is a front elevation of a fragment of what Fig. 2 shows, on a larger scale and partly in-section; I 1

Fig. 4 is a'sectional view, onsubstantially the line of Fig. 3, on a still larger scale;

Figs. 5 and 6 are front and end elevations of what is shown in Fig. 2, with the shuttle and cam slides removed;

Fig. 7 is an enlarged-sectional detail illustrating how each cam slide mfiybeconnected to themeans for reciprocating the same;

1927. Serial No. 196,499.

7, mounted on the fulcrum or rock-shaft journaled in the frame 1, and two horizontal v rails 9 arranged one above the other and suit ably secured to the upper ends of the lay-v swords. I v I Each of these rails 9 isbored for practically its full length with a row of vertical holes, the row ofholes in one rail being in thesame vertical plane as the row of holes in the other rail. Each hole is occupied by a bushing 10;

which receives a pin 11 having at one end a roller 11" and its other end 11 flattened. The ends 11 in the two rows adjoin each other. The rollers 11 ofthe several pins lie in the same vertical plane, the pins bein kept against rotation by opposite studs 13 which project through vertical slots-1O in the bushings into springhousings 18 containing springs 14 which act to hold the pins in the two rowspres'sed apart-.- the mentioned actuators.

Said pins form- I The shuttle 15 has a longitudinal groove 15 in each of its top and bottom surfaces, such grooves being adapted to receive the flattened ends of lts rows of actuators (see Figs. 3 and 4); each such surface is ateach end of the shuttle inclined with respect to its path of travel, being in the present example. beveled toward the end of the shuttle. Therefore if any two opposite actuators (one from each row are forced to ether a ainst the obli ue.

a; s q

or beveled portions 16 ateith'er end of the I:

shuttle at that time intervening they will act to canrthe shuttle along its path of travel. By continuing this operation progressively throughout the actuators in each row, first in one directionand then in the other, the shuttle.

will be caused to reciprocate back and forth;.

in fact, treating either rowas a guide or race for the shuttle the same'result would follow ifthe other row of actuators were thus operated.v Since the flattened ends of the actuators engage in the shuttle grooves 15 the shuttle iskeptfrom riding. or wiping upon and otherwise out of contact with the warp shed which, asit opens, is penetrated by the actuators at top and bottom. I I

The actuators in each row are successively moved toward the shuttle by a reciprocated system including slides having cams. In the present-case therefare two such slides, individually guided to move but moving together in paths parallel with that of the shuttle.

These and their guiding means are reversecounter-parts of each other, so a descrlption of, one will serve for the other: Each cam channel-strips receive the upper and lower stretches of an endless. chain 21 which on: tends around sprocket-wheels 22 journaled one at each endof the rail 9'and has its pintles 21 guided in grooves 2-0? in the channel strips; Each slide is connected to the upper stretch of the corresponding chain by having stud 23, projecting upwardly from a projection 17 onthe cam slide, eaten dingbetween two links in the chain (Fig. 7 lhe chains must of course move in the same (rotary) direction and together, and for this purpose the sprocket wheels 22 at one end "of the batten structure have bevel pinions 2a which are in mesh with bevel pinions 25 on a vertical shaft 26 j ournal'ed in the batten structure. This shaft 26 is driven, through suitably intergeared shafts 27 and 28 'journaled in the hat ten-structure all as best'shown in 1, 5

' and 6, from a bevel gear 29 which is fixed on a revoluble sleeve 30, journaled in the frame 1 concentric with the fulcrum shaft 8 of the lay-swords 9). Sleeve has aiiiiced to it a pinion 31 with which engage'the teeth of a rack 32 projecting rearwardly and connected to and supported at its rear end by a depending lever 33 fulcrumed on a vertically adjustable stud 34 carried by a bracket 35 attached to frame 1; a guide roller 32 maintains-therack in engagement with pinion 31. The upper end of lever 33 cei ving a pin 36 on a slide-bar 36 which has a pair of depending spaced jaws87 between whichis arranged-a stud 38 on gear 4C. llhe space between the jaws 37 is greater than the diameter of the stud so that between shiftings of thesl-ide-laar, and hence of the rack, first in one direction and then in the other, there isa dwell. Hence, in view of the 2-1 ratio ofthe gear 4:5, the cam slidesl? and hence the shuttle during each half-rotationof gear 4 will shift in one direction, the shed being then" open and the batten structure back, and" then con eto a dwell while the shed changes and the reed (not shown) beats up.

In that form of the- .invention above described, while the relatively rearward cam face 18 of each cam slide'is operative to advance the shuttle by displacing the actuators against its rear cam-facesthe other or leading cain acts also i. e. to displace the actuators into the path of the shuttle so-as to preventit running ahead and so keep it in control; But, by the modification shown in Figs.

has a slot 33 re 10 and 11, the Cains are movable and so con trolled that those cams whichare leading in either direction are withdrawn from active position. Each slide 3& in this case has sockets 39 in which the stems 4O of the forwardly and hackwardly sliding cams 10 are guided. The stems of these cams have pins 10" with which engage forks 4-1 on a lever ll fulcrumed to. move in a horizontal alarm on t re slide. l by engagement of a lug 41 thereon with one.

or the other of' fi xed detents d2 (only one being shown) pro ecting from channel str1psr20,

thus toshift one cam into and "the. other out of'operative relation to the row. of actuators, 48 being a click-pawl tohold the lever at each limit of its-;1novement until it is again moved; When the lever shifts in either direction and is then shifted by contact of its lug with 'a detent at the end of the stroke, the previously active cam is withdrawn and the other opera-ti-vely positioned preparatory to the return strolte. In Figs' 10 and 11 this change has just been effected encompleti'on of a stroke of the slides to the right. in less Figs. 1t) and 11 the other parts are the anie as in Figs; 1 to 92 Since the shuttle isbeveled at both ends springs or other means for normally holdi-n the actuators retracted are not indispensable,

though the presenceof such means is desi n able to eliminate the resistance they" would otherwise oppose to the shuttle;

By the term endsurfaee the claims I mean asurface so positionedthat the cam ining action elfects displacement of'theshuttle 'Phis] lever is movable bac t and forth,

P. It!

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ill!) lengthwise as distinguished from transversep ly of the race.

Having thus fully describedmy invention, what I'claimis: I I e 1. In combination, means afiordi ng a shuttle race, shuttled'riving means extending lengthwise ofand spaced from the race and including longitudinally arranged shuttle driving portions individually movable lZOvward the race, and? havingtheir ranges of movementwholly at one side of the same, means to hold the warp stretched a plane extending between thefirst two means, a shuttle movable alongthe race and havi iig an end-surface against which said portions are active cam-fashion, and means to successively" urgesaid portions against said end-surfaceto advance the shuttle along; the-race.

2. In combination, means aifording; a shuttle race, shuttle driving means extending lengthwise of and spaced from the race and including longitudinallyarranged shut tie-driving portions individually movableto. ward the race, and having-gthei r-ranges of movement wholly at one side of the same, means to hold the Warpstretched ina plane extending between the first two means, a shuttle movable alongtherace and having relatively oppositely" facing end surfaces against which said portions are active camiashion, and means to successively urge said portions against said end-surfaces in alternation to advance the shuttle first in one and then in the other direction along the race.

3. In combination, opposed substantially parallel and spaced shuttle-driving means aftording between them a path for the shuttle and each including longitudinally arranged shuttle-driving portions individually movable toward said path, and having their ranges of movement wholly at one side of the same, means to hold the warp stretched in a plane extending between said opposed driving means, a shuttle guided between said means for movement along said path and having end-surfaces against which said por tions of both means are respectively active cam-fashion, and means to successively urge said portions of both means against the respective end-surfaces to advance the shuttle along said path.

4. In combinatiommeans aifording a shuttle I race, shuttle driving means extending lengthwise of and spaced from the race and including longitudinally arranged shuttle-driving portions individually movable toward the race and having their ranges of movement wholly at one side of the same, and spaced'from each other and formed with free ends adapted on such movement to penetrate a warp-she'd, means to hold the warp stretched in a plane extending between the first two means, a

shuttle movable along the race and having an Y end-surface against which said portions are active cam-fashion, and means to successively urge said portions against said end-surface to advance the shuttle along the race.

5. In combination, meansafiording a shuttle race, a shuttle arranged to travel along the race and having an inclined end-surface, actuators arranged in a series opposite to and extending longitudinally of the'race and in divicl'ually movable toward the race and against said incline, and having their ranges of movement wholly at one side of said race, means to hold the warp stretched in a plane extending between the first two means, and means to successively urge the actuators against said end-surface to advance the shuttle along the race.

6. In combination, a frame, aback-andforth-moving batten-including structure therein having means to guide a shuttle through the warp-shed, a shuttle guided by said means, a reciprocatory slide, means to transmit reciprocating motion from the slide to the shuttle, rotary members intergeared to rotate at a speed ratio of 2 to 1, means to transmit reciprocation from the rotary member rotating at the faster speed to said structure, the other rotary member having an eccentric stud, a slide-bar movable in the frame and having a recess receiving the stud, and power-transmitting mechanism connecting the slide-bar and slide. I

In testimony whereof I affix my signature.

ARTHUR J. VERVAET. 

